#include<iostream>
using namespace std;
int main ()
{
    // string str = "D:\hello\world\est.test\";
    //              cout << str << endl;
    string str1 = "d/aaa";
    //原始字面量解决转义字符有反斜杆的问题
   string str = R"(D:\hello\world\est.test\)";
   //在“”内添加注释时，前后注释必须一致
   string str2 = R"hello(D:\hello\world\est.test\)hello";
   
   cout << str << endl;
   cout << str1 << endl;
   cout << str2 << endl;
   return 0;
   return 0;
}